2006AJ....131..828C

Query : 2006AJ....131..828C

2006AJ....131..828C - Astron. J., 131, 828-836 (2006/February-0)

Neutral hydrogen in the polar ring galaxy UGC 9796.

COX A.L., SPARKE L.S. and VAN MOORSEL G.

Abstract (from CDS):

We have used the Very Large Array to observe the polar ring galaxy UGC 9796 (II Zw 73; PRC A-06) in the 21 cm line of neutral hydrogen. All the neutral gas in this galaxy is associated with the polar ring. Our observations show that ≃5x109 M☉ of H I rotates in a plane projected about 25° from perpendicular to the equatorial plane of the early-type host galaxy, consistent with earlier observations in the Hα line. The outermost gas appears to bend away from the minor axis of the host system, in the same sense as the stellar ring. UGC 9796 is in a very gas-rich environment: our 21 cm images show five gas-rich companion galaxies in the same field within 100 km/s, with a total of ≃2x1010 M☉ between them. However, we see no H I streamers connecting the systems or any other evidence for an ongoing interaction between UGC 9796 and its companions.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual (UGC 9796) - Galaxies: Kinematics and Dynamics - Galaxies: Structure - Radio Lines: Galaxies

Nomenclature: Table 2: [CSV2006] N (Nos 1-5).

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LEDA 90595 AG? 02 11 26.38 +40 45 32.9           ~ 15 0
2 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
3 MCG+05-29-086 GiC 12 27 41.8591778952 +28 41 53.026524312   16.0       ~ 68 0
4 NGC 4650A Sy2 12 44 49.0352044176 -40 42 51.691570488   14.12 13.58 13.29 13.9 ~ 205 0
5 NGC 5122 Sy1 13 24 14.9402501712 -10 39 15.431171292   14   13.36   ~ 53 0
6 Z 193-6 GiP 14 51 14.3956253136 +35 32 32.932212324   14.2       ~ 166 0
7 Z 221-45 LIN 15 15 05.5371887352 +43 09 02.103180444   15.2       ~ 27 1
8 LEDA 2214734 EmG 15 15 39.852 +43 10 42.53   16.88       ~ 12 1
9 MCG+07-31-048 SyG 15 15 56.3061737160 +43 10 00.480168228   16.0       ~ 58 0
10 Z 221-46 EmG 15 16 03.962 +43 09 36.51   15.7       ~ 41 2
11 MCG+07-31-051 EmG 15 16 39.570 +42 57 13.93   16.0       ~ 27 1
12 LEDA 92985 G 15 16 54.3 +43 06 20   16.24       ~ 4 1

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